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"Remember." Only then took a detailed look at the Lvliangshan blast furnace and artisans, but did not give advice to Ning Yi, at this time whispered.
"...the direction of blast furnace research is not only to produce better swords and weapons, but to further find the principle and ideas for raising the temperature, further remove the carbon content inside the iron, and produce a softer and tougher iron. Each characteristic The steel has a place to use, to master these characteristi ...
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